mactex-utilities is broken in 5.11.0. I'll file a
report, but I'm mentioning it just in case somebody
wants to fix it before 5.12.0 (or maybe it's too
soon to the release to fix it)
(%o88) (2*sin(atan2(h*sqrt(4-h^2),2-h^2)*k))/sqrt(4-h^2)
(%i89) tex(%);
$${{2\,\sin \left({\rm atan2}\left(h\,\sqrt{4-h^2} , 2-h^2\right)\,k
\right)}\over{\sqrt{4-h^2}}}$$
(%o89) false
(%i90) load("mactex-utilities")$
(%i91) tex(%o88);
$$
Maxima encountered a Lisp error:
Error in APPEND [or a callee]: " " is not of type LIST.
Automatically continuing.
To reenable the Lisp debugger set *debugger-hook* to nil.
Barton